<template>
  <div id="tags-view-container" class="tags-view-container">
    <scroll-pane ref="scrollPaneRef" class="tags-view-wrapper" @scroll="handleScroll">
      <router-link
        v-for="tag in visitedViews"
        :key="tag.path"
        :data-path="tag.path"
        :class="isActive(tag) ? 'active' : ''"
        :to="{ path: tag.path, query: tag.query, fullPath: tag.fullPath }"
        class="tags-view-item"
        :style="activeStyle(tag)"
        @click.middle="!isAffix(tag) ? closeSelectedTag(tag) : ''"
        @contextmenu.prevent="openMenu(tag, $event)"
      >
        {{ tag.title }}
        <span v-if="!isAffix(tag)" @click.prevent.stop="closeSelectedTag(tag)" class="close">
          <el-icon class="el-input__icon"><close /></el-icon>
        </span>
      </router-link>
    </scroll-pane>
    <ul v-show="visible" :style="{ left: left + 'px', top: top + 'px' }" class="contextmenu">
      <li @click="refreshSelectedTag(selectedTag)">
        <!-- <refresh-right style="width: 1em; height: 1em" /> -->
        
        刷新页面
      </li>
      <li v-if="!isAffix(selectedTag)" @click="closeSelectedTag(selectedTag)">
        <!-- <close style="width: 1em; height: 1em" /> -->
        <close style="width: 1em; height: 1em" />
        关闭当前
      </li>
      <li @click="closeOthersTags">
        <!-- <circle-close style="width: 1em; height: 1em" /> -->
        关闭其他
      </li>
      <li v-if="!isLastView()" @click="closeRightTags">
        <!-- <right style="width: 1em; height: 1em" /> -->
        关闭右侧
      </li>
      <li @click="closeAllTags(selectedTag)">
        <!-- <circle-close style="width: 1em; height: 1em" /> -->
        全部关闭
      </li>
    </ul>
  </div>
</template>

<script setup>
import ScrollPane from './ScrollPane';
import { computed,ref,getCurrentInstance,watch,onMounted,nextTick } from "vue";
import { TagsViewStore } from "@/store/modules/tagsView";
import { AppStore } from "@/store/modules/app"
import { PermissionStore } from "@/store/modules/permission"
import { useRoute,useRouter } from "vue-router";
import { Close } from '@element-plus/icons-vue'
import path from 'path-browserify'
const visible = ref(false);
const top = ref(0);
const left = ref(0);
const selectedTag = ref({});
const affixTags = ref([]);
const scrollPaneRef = ref(null);
const { proxy } = getCurrentInstance();
const tagsViewStore = TagsViewStore();
const appStore = AppStore();
const permissionStore = PermissionStore()
const route = useRoute();
const router = useRouter();

const visitedViews = computed(() => tagsViewStore.visitedViews);
const routes = computed(() => permissionStore.routes);
const theme = computed(() => appStore.theme);

watch(route, () => {
  addTags();
  moveToCurrentTag();
});
watch(visible, (value) => {
  if (value) {
    window.document.body.addEventListener('click', closeMenu);
  } else {
    window.document.body.removeEventListener('click', closeMenu);
  }
});
onMounted(() => {
  initTags();
  addTags();
});

function isActive(r) {
  return r.path === route.path;
}
function activeStyle(tag) {
  if (!isActive(tag)) return {};
  return {
    'background-color': theme.value,
    'border-color': theme.value
  };
}
function isAffix(tag) {
  return tag.meta && tag.meta.affix;
}
function isLastView() {
  try {
    return (
      selectedTag.value.fullPath === visitedViews.value[visitedViews.value.length - 1].fullPath
    );
  } catch (err) {
    return false;
  }
}
function filterAffixTags(routes, basePath = '/') {
  let tags = [];
  routes.forEach((route) => {
    if (route.meta && route.meta.affix) {
      const tagPath = path.resolve(basePath, route.path)
      tags.push({
        fullPath: tagPath,
        path: tagPath,
        name: route.name,
        meta: { ...route.meta }
      });
    }
    if (route.children) {
      const tempTags = filterAffixTags(route.children, route.path);
      if (tempTags.length >= 1) {
        tags = [...tags, ...tempTags];
      }
    }
  });
  return tags;
}
function initTags() {
  const res = filterAffixTags(routes.value);
  affixTags.value = res;
  for (const tag of res) {
    // Must have tag name
    if (tag.name) {
      tagsViewStore.addView(tag)
    }
  }
}
function addTags() {
  const { name } = route;
  if (name) {
    tagsViewStore.addView(route)
  }
  return false;
}
function moveToCurrentTag() {
  nextTick(() => {
    // for (const r of visitedViews.value) {
    //   if (r.path === route.path) {
    //     scrollPaneRef.value.moveToTarget(r);
    //     // when query is different then update
    //     if (r.fullPath !== route.fullPath) {
    //       store.dispatch('tagsView/updateVisitedView', route);
    //     }
    //   }
    // }
  });
}
function refreshSelectedTag(view) {
  nextTick(() => {
    router.replace({
      path: '/redirect' + selectedTag.value.fullPath
    })
  })
}
function closeSelectedTag(view) {
  let visitedViews = tagsViewStore.delView(view)
  if (isActive(view)) {
    toLastView(visitedViews, view)
  }
}
function closeRightTags() {
  let visitedViews = tagsViewStore.delRightView(selectedTag.value)
  toLastView(visitedViews,selectedTag.value)
}
function closeOthersTags() {
  router.push(selectedTag.value).catch(() => {});
  tagsViewStore.delOtherView(selectedTag.value)
}
function closeAllTags(view) {
  let visitedViews = tagsViewStore.delAllView(selectedTag.value)
  toLastView(visitedViews, view);
}
function toLastView(visitedViews, view) {
  const latestView = visitedViews.slice(-1)[0];
  if (latestView) {
    router.push(latestView.fullPath);
  } else {
    if (view.name === 'Dashboard') {
      router.replace({ path: '/redirect' + view.fullPath });
    } else {
      router.push('/');
    }
  }
}
function openMenu(tag, e) {
  const menuMinWidth = 95;
  const offsetLeft = proxy.$el.getBoundingClientRect().left; // container margin left
  const offsetWidth = proxy.$el.offsetWidth; // container width
  const maxLeft = offsetWidth - menuMinWidth; // left boundary
  const l = e.clientX - offsetLeft; // 15: margin right

  if (l > maxLeft) {
    left.value = maxLeft;
  } else {
    left.value = l;
  }
  console.log(e.clientY)
  top.value = e.clientY - 50;
  visible.value = true;
  selectedTag.value = tag;
}
function closeMenu() {
  visible.value = false;
}
function handleScroll() {
  closeMenu();
}
</script>

<style lang="scss" scoped>
@import '@/assets/styles/mixin.scss';
.tags-view-container {
  @include groundGlass;
  width: 100%;
  background: #fff;
  // border-bottom: 1px solid #d8dce5;
  // box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.12), 0 0 3px 0 rgba(0, 0, 0, 0.04);
  .tags-view-wrapper {
    .tags-view-item {
      display: inline-block;
      position: relative;
      cursor: pointer;
      line-height: 1;
      border: 1px solid #d8dce5;
      color: #495060;
      background: #fff;
      padding: 8px 12px;
      font-size: 14px;
      margin-left: 5px;
      &:first-of-type {
        margin-left: 15px;
      }
      &:last-of-type {
        margin-right: 15px;
      }
      &.active {
        background-color: #42b983;
        color: #fff;
        border-color: #42b983;
        &::before {
          content: '';
          background: #fff;
          display: inline-block;
          width: 10px;
          height: 10px;
          border-radius: 50%;
          position: relative;
          margin-right: 5px;
          margin-left: 3px;
        }
      }
    }
  }
  .contextmenu {
    margin: 0;
    background: #fff;
    z-index: 3000;
    position: absolute;
    list-style-type: none;
    padding: 5px 0;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 400;
    color: #333;
    box-shadow: 2px 2px 3px 0 rgba(0, 0, 0, 0.3);
    li {
      margin: 0;
      padding: 7px 16px;
      cursor: pointer;
      &:hover {
        background: #eee;
      }
    }
  }
}
</style>

<style lang="scss">
//reset element css of el-icon-close
.tags-view-wrapper {
  .tags-view-item {
    .el-icon-close {
      width: 16px;
      height: 16px;
      vertical-align: 2px;
      border-radius: 50%;
      text-align: center;
      transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
      transform-origin: 100% 50%;
      &:before {
        transform: scale(0.6);
        display: inline-block;
        vertical-align: -3px;
      }
      &:hover {
        background-color: #b4bccc;
        color: #fff;
        width: 12px !important;
        height: 12px !important;
      }
    }
  }
}
.close{
  position: relative;
  border-radius: 50%;
  top: 2px;
  right: -1px;
  display: inline-block;
  width: 15px !important;
  height: 15px !important;
}
.close:hover {
  color: #fff;
  background-color: #a8abb2;
}
</style>
